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The beam pattern, it's pretty much a spotlight with the Supernova, however when not in use, it got a rather dim stand by light that cut off fairly quickly.
The Edelux have a much better beam pattern, that you can set it higher to illuminate the road further without dazzling incoming road user, it also provide some illumination on the side.
Stand by light is also quite bright and engaged straight away even if you haven't ridden it yet.
In what way(s) is the Edelux better than the Supernova Ed?